Choose the corect item:We cango to the seaside PROVIDING THAT/IN CAUSE/UNLESS

Choose the corect item:
We cango to the seaside PROVIDING THAT/IN CAUSE/UNLESS the weather stays nice.
I have to save enough monay, IN CAUSE/OTHERWISE/BUT I won't be able to travel abroad.
UNLESS/IF/WHETHER you pass your driving test, you can't drive a car.
I will sign the contract OR/ONLY IF/WHETHER you change some terms first.
BUT/APART/UNLESS for Lynn's quick thinking there would have been a disaster.